Mechanism of Azo Coupling Reactions XXXI
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Rafal Kaminski; Urs Lauk; Peter Skrabal; Heinrich Zollinger
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Article
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1983
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John Wiley and Sons
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German
⚖ 879 KB
## Abstract Azo coupling of 6‐amino‐4‐hydroxy‐2‐naphthalenesulfonic acid **(1)** with 3‐trifluoromethyl‐ and 4‐nitrobenzenediazonium ion in relative highly concentrated aqueous alkaline solutions gave ratios of aminoazo to hydroxyazo compounds which are much higher than expected on the basis of the